﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Data;

namespace Logistics.Control
{
    class BoolToOppositeBoolConverter : IValueConverter 
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (targetType != typeof(bool?) && targetType != typeof(bool))
            {
                throw new InvalidOperationException("The target must be a boolean");
            }
            return ! System.Convert.ToBoolean(value);
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (targetType != typeof(bool?) && targetType != typeof(bool))
            {
                throw new InvalidOperationException("The target must be a boolean");
            }
            return !System.Convert.ToBoolean(value);
        }
    }
}
